Improvement in the manner of casting butt or other hinges of iron, brass



rtree..

PATnNr rIHOMAS SHEPHERD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOE TO NVM. II. CARE.

IMPROVEMENT IN THE MANNER 0F CASTING BUTT OR OTHER HINGES 0E IRON, BRASS, 0R OTHER METAL.

Specilication forming part of Letters Patent N0. "2,288, dated October 9, lSLIl,

To @ZZ whom it may concern.-

Be it known that I, lli-reims SHEPHERD, of the city of Philadelphia, in the State of Pennsylvania, have invented an Improvement in the Manner of Casting Butt or other Hinges of Iron, Brass, or other Metal; and I do hereby declare that the following is a full and exact description thereof.

In casting my hinges I first prepare a shaft of cast-iron or of' other metahwhich is so formed as that it shall constitute the joint-pin upon which the hinge shall turn, and which has also round collets, flanges, or dividing-pieces cast with it, which are to constitute the ends of the knuckles of the hinge. rlhese cast shafts I turn in the lathe in those sections or divisions thereof which are intended to turn freely in the knuckle of the hinge, while the other sections are left rough as they are delivered from the mold.

In casting my hinges I form one half or leaf thereof at each pouring of the metal, and in effecting this I proceed in the following manner: I mold my half-hinge from a pattern not having the barrel part divided into knuckles, but making in the flask a semi-cylindrical impression. I then take one of my cast-1netal shafts and fill with sand those divisions of' it which have been turned so as completely to occupy the space between the collets terminating-such turned part, there beingin all cases an intermediate space not so filled with sand. I then lay this prepared shaft in the flask, so as to occupy the part where the hinge-knuckles are to Ioe formed, and pour in my metal. rlhe half-hinge being taken from the mold and the sand removed from between the knuckles. it is then to be dipped into or coated with loam or some similar article, which will prevent the adhering of' the metal to the shaft when the second half is cast. rPhe first half thus prepared, is then laid in the fiask and the second half cast upon it. Vhen taken from the mold, the hinge will work freely on its joint-pin or shaft, and it will present a perfectly-close joint at the back as well as at the front thereof-a thing absolutely required to render such articles merchantable.

Any desired number of hinges may be molded and cast together which a flask can conveniently contain, and first and second halves may be cast in the same or in different flasks, as may be preferred.

In the accompanying drawings, Figures l and 2 represent the two sides of a patternplate for molding two first and two second halfhinges and two shafts with their collets or flanges. Figs. 3 and 4- represent the two sides of a flask prepared for casting from said pattern-plate.

rPhe hinges shown are such as have five knuckles; but the number may be greater or less.

The first half-patterns are marked a c in Figs. l and 2, and the second halves?) b. The shafts are shown at c c. rPhe corresponding parts are similarly designated in Figs. 3 and 4. rEhe shafts, after being taken from the flasks, are to be turned in the sections c c', and these sections are to be filled with sand, and laid in the flask in casting the first halves, as shown at c c, Fig. 3, and when cast, lthe sand c removed, and the jointed loams, they are prepared to occupy the place a c in casting the second halves.

IIhe collets or flanges which divide the knuckles are formed conical at their si. des, a shown in the drawings, by which device the joint-pin or shaft is rendered capable of sustaining any stress which the hinge itself will bear.

Having thns fully described the nature of my invention and shown the manner in which the same is carried into operation, what I claim therein as new, and desire to secure by Letters Patent, is-

l. The casting of butt or other hinges by preparing a shaft of cast metal, in the mart ner set forth,and laying the same in the flask, with the spaces filled with sand which are to forni or receive the jointed knuckles of the hinge, and casting the first half thereon, and as a component part of the operation the subsoquently placing this half in the flask, prehinge upon ajont-pin with washers between pared as set forth, foi` the Casting of the sootho joints; but I do claim the so doing, in ond half, tho modo of procedure in all respects combination with t shaft or joint-pin formed boing substantially the saine with that above and prepared in the manner heroin inside made known. known.

2. I do not claim the more manufacturing TIIOS. SHEPHERD. of hinges by Casting the ist half and plao- Vitnessos: ing this in the ask to have the second half WILLIAM OSBORNF.,

cast upon it; nor do I olaiin the casting of :i J. MITCHELL. 

